| 1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
| 2 | #include "perl.h" |
2 | #include "perl.h" |
| 3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
| 4 | |
4 | |
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5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
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6 | |
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7 | #include <gperl.h> |
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8 | #include <gtk2perl.h> |
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9 | |
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10 | #define IW 80 |
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11 | |
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12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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13 | |
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14 | static guint32 a85_val; |
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15 | static guint a85_cnt; |
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16 | static guchar a85_buf[80], *a85_ptr; |
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17 | |
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18 | static void |
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19 | a85_init (void) |
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20 | { |
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21 | a85_cnt = 4; |
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22 | a85_ptr = a85_buf; |
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23 | } |
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24 | |
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25 | static void |
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26 | a85_push (PerlIO *fp, guchar c) |
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27 | { |
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28 | a85_val = a85_val << 8 | c; |
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29 | |
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30 | if (!--a85_cnt) |
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31 | { |
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32 | a85_cnt = 4; |
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33 | if (a85_val) |
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34 | { |
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35 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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36 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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37 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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38 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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39 | a85_ptr[0] = (a85_val ) + 33; |
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40 | |
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41 | a85_ptr += 5; |
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42 | } |
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43 | else |
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44 | *a85_ptr++ = 'z'; |
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45 | |
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46 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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47 | { |
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48 | *a85_ptr++ = '\n'; |
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49 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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50 | a85_ptr = a85_buf; |
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51 | } |
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52 | } |
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53 | |
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54 | } |
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55 | |
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56 | a85_finish (PerlIO *fp) |
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57 | { |
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58 | while (a85_cnt != 4) |
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59 | a85_push (fp, 0); |
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60 | |
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61 | *a85_ptr++ = '~'; // probably buggy end-marker |
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62 | *a85_ptr++ = '>'; // probably buggy end-marker |
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63 | *a85_ptr++ = '\n'; |
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64 | |
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65 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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66 | } |
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67 | |
| 5 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
68 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
| 6 | |
69 | |
| 7 | PROTOTYPES: ENABLE |
70 | PROTOTYPES: ENABLE |
| 8 | |
71 | |
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72 | GdkPixbuf_noinc * |
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73 | transpose (GdkPixbuf *pb) |
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74 | CODE: |
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75 | { |
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76 | int w = gdk_pixbuf_get_width (pb); |
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77 | int h = gdk_pixbuf_get_height (pb); |
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78 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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79 | int x, y, i; |
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80 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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81 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
| 9 | |
82 | |
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83 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
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84 | |
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85 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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86 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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87 | |
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88 | for (y = 0; y < h; y++) |
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89 | for (x = 0; x < w; x++) |
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90 | for (i = 0; i < bpp; i++) |
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91 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
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92 | } |
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93 | OUTPUT: |
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94 | RETVAL |
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95 | |
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96 | GdkPixbuf_noinc * |
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97 | flop (GdkPixbuf *pb) |
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98 | CODE: |
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99 | { |
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100 | int w = gdk_pixbuf_get_width (pb); |
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101 | int h = gdk_pixbuf_get_height (pb); |
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102 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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103 | int x, y, i; |
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104 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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105 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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106 | |
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107 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
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108 | |
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109 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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110 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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111 | |
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112 | for (y = 0; y < h; y++) |
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113 | for (x = 0; x < w; x++) |
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114 | for (i = 0; i < bpp; i++) |
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115 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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116 | } |
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117 | OUTPUT: |
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118 | RETVAL |
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119 | |
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120 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
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121 | |
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122 | GdkPixbuf_noinc * |
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123 | p7_to_pb (int w, int h, guchar *src) |
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124 | CODE: |
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125 | { |
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126 | int x, y; |
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127 | guchar *dst, *d; |
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128 | int dstr; |
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129 | |
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130 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
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131 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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132 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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133 | |
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134 | for (y = 0; y < h; y++) |
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135 | for (d = dst + y * dstr, x = 0; x < w; x++) |
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136 | { |
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137 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
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138 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
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139 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
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140 | |
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141 | src++; |
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142 | } |
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143 | } |
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144 | OUTPUT: |
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145 | RETVAL |
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146 | |
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147 | SV * |
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148 | pb_to_p7 (GdkPixbuf *pb) |
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149 | CODE: |
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150 | { |
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151 | int w = gdk_pixbuf_get_width (pb); |
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152 | int h = gdk_pixbuf_get_height (pb); |
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153 | int x, y; |
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154 | guchar *dst; |
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155 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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156 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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157 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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158 | int Er[IW], Eg[IW], Eb[IW]; |
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159 | int seed = 77; |
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160 | |
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161 | RETVAL = newSV (w * h); |
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162 | SvPOK_only (RETVAL); |
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163 | SvCUR_set (RETVAL, w * h); |
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164 | |
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165 | dst = SvPVX (RETVAL); |
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166 | |
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167 | memset (Er, 0, sizeof (int) * IW); |
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168 | memset (Eg, 0, sizeof (int) * IW); |
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169 | memset (Eb, 0, sizeof (int) * IW); |
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170 | |
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171 | /* some primitive error distribution + random dithering */ |
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172 | |
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173 | for (y = 0; y < h; y++) |
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174 | { |
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175 | int er = 0, eg = 0, eb = 0; |
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176 | |
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177 | for (x = 0; x < w; x++) |
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178 | { |
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179 | int r, g, b; |
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180 | guchar *p = src + x * bpp + y * sstr; |
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181 | |
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182 | r = ((p[0] + er + Er[x]) * 7 + 128) / 255; |
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183 | g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; |
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184 | b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; |
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185 | |
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186 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
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187 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
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188 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
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189 | |
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190 | er += p[0] - (r * 255 + 4) / 7; |
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191 | eg += p[1] - (g * 255 + 4) / 7; |
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192 | eb += p[2] - (b * 255 + 2) / 3; |
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193 | |
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194 | Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3; |
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195 | Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3; |
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196 | Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3; |
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197 | |
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198 | *dst++ = r << 5 | g << 2 | b; |
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199 | } |
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200 | } |
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201 | } |
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202 | OUTPUT: |
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203 | RETVAL |
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204 | |
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205 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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206 | |
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207 | void |
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208 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
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209 | CODE: |
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210 | { |
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211 | int w = gdk_pixbuf_get_width (pb); |
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212 | int h = gdk_pixbuf_get_height (pb); |
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213 | int x, y, i; |
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214 | guchar *dst; |
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215 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
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216 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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217 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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218 | |
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219 | a85_init (); |
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220 | |
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221 | for (y = 0; y < h; y++) |
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222 | for (x = 0; x < w; x++) |
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223 | for (i = 0; i < 3; i++) |
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224 | a85_push (fp, src [x * bpp + y * sstr + i]); |
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225 | |
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226 | a85_finish (fp); |
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227 | } |
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228 | |
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229 | |
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230 | |
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231 | |
